Electric dipole moment signatures of PeV-scale superpartners
Electric dipole moment signatures of PeV-scale superpartners
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PeV 级超级伙伴的电偶极矩特征
DOI：
10.1103/physrevd.87.113002
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发表时间：
2013
影响因子：
5
通讯作者：
A. Ritz
中科院分区：
文献类型：
--
作者：
D. McKeen;M. Pospelov;A. Ritz
一个可能的超对称解释的新的希格斯类126 GeV共振涉及一个高的sfermion质量尺度，从几十TeV到PeV或更高。这个尺度为希格斯质量提供了足够大的循环修正，并且可以自然地解决来自违反味道的观测量的约束，即使在sfermion扇区中具有通用的味道结构。我们指出，这样的高尺度仍然可以产生CP违反电偶极矩（EDM）在有趣的水平，由于增强的左右（LR）sfermion混合。我们说明这一点，饱和的轻费米子质量修正从sfermion阈值，离开高吉诺质量不受约束。在这个框架中，我们发现，目前的EDM边界探测器的能量标度为0.1 PeV或更高，这是竞争力的达到$\xA_K$和更敏感的比其他强子和轻子味观测。我们还考虑了在这种情况下，高维超对称运营商的敏感性，包括那些导致质子衰变。
A possible supersymmetric interpretation of the new Higgs-like 126 GeV resonance involves a high sfermion mass scale, from tens of TeV to a PeV or above. This scale provides sufficiently large loop corrections to the Higgs mass and can naturally resolve the constraints from flavor-violating observables, even with a generic flavor structure in the sfermion sector. We point out that such high scales could still generate CP-violating electric dipole moments (EDMs) at interesting levels due to the enhancement of left-right (LR) sfermion mixing. We illustrate this by saturating the light fermion mass corrections from the sfermion threshold, leaving the gaugino masses unconstrained. In this framework, we find that the current EDM bounds probe energy scales of 0.1 PeV or higher; this is competitive with the reach of $\epsilon_K$ and more sensitive than other hadronic and leptonic flavor observables. We also consider the sensitivity to higher dimensional supersymmetric operators in this scenario, including those that lead to proton decay.